[En-Nut-Discussion] Numerous LASTACK

[Dusan Ferbas]

Hi,

Oliver tested his modifications with Ethernut2 (SMC driver). I tested it 
(tcpsm 1.12 with nicrtl 1.5 - original tx packet approach) on Charon II boards.

Anyhow these changes brought improvement to reliability, no more lost FIN 
packets. I was able to access devices over a WAN (2x WiFi). XML file over a 
http was working for 2 days on a local LAN with 1 second refresh interval. 
3 http threads were cyclicly used, http 1.0 style (no persistent 
connections, socket close after every transfer).

>Hi All,
>
>Has someone a fix for this issue yet?
>I've just noticed it too.
>
>Regards,
>Mike
>
>-----Original Message-----
>Hi Jean Pierre,
>
>I know, there are some bugs in TCP stack and I'm working on.
>Currently I have some new/changed sources that need still some testing. At
>my local environment it's very stable at the moment, even under heavy
>traffic with packet loss...
>
>Because I don't have any test result from other developers, this code is not
>yet in CVS.
>
>Just tell me, if you want to test the "new" TCP stack.
>
>Regards,
>Oliver.
>
> > -----Ursprüngliche Nachricht-----
> > Von: en-nut-discussion-bounces at egnite.de
> > [mailto:en-nut-discussion-bounces at egnite.de]Im Auftrag von Jean Pierre
> > Gauthier
> > Gesendet: Montag, 14. Juni 2004 03:18
> > An: 'Ethernut User Chat (English)'
> > Betreff: [En-Nut-Discussion] Numerous LASTACK
> >
> >
> >
> > Despite the latest tcpsm.c (1.9.2.1.2.1  2004/04/15), tcpout
> > (1.1.1.1.4.1
> > 2004/04/15)and realtek driver nicrtl.c (Revision 1.6
> > 2004/05/17 ), some
> > (<1%?) TCP client connections are not ended correctly and stay in
> > LASTACK state. Is that a TCP state machine bug / how to avoid this?
> > Jean Pierre
> >
> > TRACE( httpd "Sockets" menu ):
> > Sockets
> > Handle Type Local           Remote              Status
> > 8B3C TCP 192.168.0.102:80   192.168.0.201:1271  ESTABL
> > 91CE TCP 192.168.0.102:6106 193.252.22.108:110  LASTACK
> > 8A8A TCP 192.168.0.102:6099 195.68.47.19:80     LASTACK
> > 583E TCP 192.168.0.102:6017 193.252.22.108:110  LASTACK
> > 949F TCP 192.168.0.102:5992 217.12.6.8:80       LASTACK
> > 88C8 TCP 192.168.0.102:5989 209.207.134.75:80   LASTACK
> > 7C5E TCP 192.168.0.102:5988 193.252.117.130:80  LASTACK 7A4F TCP
> > 192.168.0.102:5542 193.252.22.108:110  LASTACK
> > 7D35 TCP 192.168.0.102:4105 217.12.6.8:80       LASTACK


Dusan Ferbas
www.dfsoft.cz